What is the Home Energy Rating System (HERS) rating?
HERS is the acronym for Home Energy Rating System. It is a scoring system established by the Residential Energy Services Network (RESNET), a national non-profit organization recognized as a national standard by such organizations as the Federal IRS, EPA, and the mortgage industry.

The scoring index is a scale from 0 up to around 200, with 100 representing the score for a 2006 code standard new home of the same size and type compared to the new home being evaluated. A score of 0 would represent a home that uses 0 net energy ( e.g., a 0 net energy home). Each 1 point decrease in the HERS index corresponds approximately to a 1% reduction in energy consumption. For example, a home that achieves a HERS rating of 85 would be 15% more energy efficient than the standard new code built home in 2006. Older, unimproved homes typically have ratings well over 100. The lower the score, the more efficient it is. The score is determined by energy modeling of the buildings structure and systems by a certified HERS rater.

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1. What is the anticipated cost to the property owner of complying with the code?
2. Will implementing the stretch code save me money on utilities?
3. What low-cost interventions can I do to meet the stretch energy code?
4. What kinds of projects trigger the stretch energy code?
5. What is the Home Energy Rating System (HERS) rating?
6. What are the prescriptive measures that can satisfy the stretch energy code?
7. Can I limit a remodeling project to items of my own choosing?
8. If I’m doing a small remodeling project, like a kitchen or bathroom renovation, will I have to meet the stretch energy code?
9. Do I have to achieve a Home Energy Rating System (HERS) rating if my project is only a renovation of an existing building?
10. Would existing buildings or historic buildings have to be upgraded to comply with the stretch code appendix?
11. As a residential property owner, how would I comply with the stretch energy code?
12. What categories do multifamily residential buildings fall into?
13. What training do Home Energy Rating System (HERS) raters undergo?
14. How do I find a Home Energy Rating System (HERS) rater?
15. How could my contractor know how to meet the stretch energy code?
16. What kinds of technical and financial help are available to property owners and contractors?
17. How would the stretch energy code be enforced?